Histone H3.3 K27M and K36M mutations de-repress transposable elements through perturbation of antagonistic chromatin marks.
Animals
Animals, Genetically Modified
Centromere
/ ultrastructure
Chromatin
/ chemistry
Chromatin Immunoprecipitation
Computational Biology
/ methods
DNA Methylation
DNA Transposable Elements
Drosophila melanogaster
Epigenesis, Genetic
Histones
/ chemistry
Humans
Imaginal Discs
/ metabolism
Lysine
/ chemistry
Methionine
/ chemistry
Mice
Microscopy, Electron, Scanning
Microscopy, Fluorescence
Mutation
Phenotype
RNA-Seq
Drosophila
H3K27me3
H3K36me2
K27M
K36M
ash1
krimp
oncohistones
piRNA
transposons
Journal
Molecular cell
ISSN: 1097-4164
Titre abrégé: Mol Cell
Pays: United States
ID NLM: 9802571
Informations de publication
Date de publication:
02 12 2021
02 12 2021
Historique:
received:
01
03
2021
revised:
10
08
2021
accepted:
12
10
2021
pubmed:
6
11
2021
medline:
8
1
2022
entrez:
5
11
2021
Statut:
ppublish
Résumé
Histone H3.3 lysine-to-methionine substitutions K27M and K36M impair the deposition of opposing chromatin marks, H3K27me3/me2 and H3K36me3/me2. We show that these mutations induce hypotrophic and disorganized eyes in Drosophila eye primordia. Restriction of H3K27me3 spread in H3.3K27M and its redistribution in H3.3K36M result in transcriptional deregulation of PRC2-targeted eye development and of piRNA biogenesis genes, including krimp. Notably, both mutants promote redistribution of H3K36me2 away from repetitive regions into active genes, which associate with retrotransposon de-repression in eye discs. Aberrant expression of krimp represses LINE retrotransposons but does not contribute to the eye phenotype. Depletion of H3K36me2 methyltransferase ash1 in H3.3K27M, and of PRC2 component E(z) in H3.3K36M, restores the expression of eye developmental genes and normal eye growth, showing that redistribution of antagonistic marks contributes to K-to-M pathogenesis. Our results implicate a novel function for H3K36me2 and showcase convergent downstream effects of oncohistones that target opposing epigenetic marks.
Identifiants
pubmed: 34739871
pii: S1097-2765(21)00837-6
doi: 10.1016/j.molcel.2021.10.008
pmc: PMC9990445
mid: NIHMS1872924
pii:
doi:
Substances chimiques
Chromatin
0
DNA Transposable Elements
0
Histones
0
Methionine
AE28F7PNPL
Lysine
K3Z4F929H6
Types de publication
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
4876-4890.e7Subventions
Organisme : NIH HHS
ID : P40 OD018537
Pays : United States
Organisme : CIHR
ID : MOP-44050
Pays : Canada
Organisme : CIHR
ID : IOP-107945
Pays : Canada
Organisme : NCI NIH HHS
ID : P01 CA196539
Pays : United States
Organisme : CIHR
ID : PJT-156086
Pays : Canada
Organisme : CIHR
ID : FDN-154307
Pays : Canada
Organisme : CIHR
ID : MOP-286756
Pays : Canada
Commentaires et corrections
Type : CommentIn
Informations de copyright
Copyright © 2021 Elsevier Inc. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of interests The authors declare no competing interests.
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